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4.86 5 üzerinden
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  • Hydro jet
    Very clever and elegant mechanism using only one cranked piston
    The displacer is not hinged to anything and only the power piston is connected to the flywheel .
    This is contrast to common design with 2 cranks.


    With some effort, I got it to run at moderate speed on 40 degrees[C] surface at room temperature

    May 05,2019

  • Will A. Nugent
    It is the only toy he played with the whole day after his birthday, it's great value and will provide hours of entertainment

    Oct 27,2018

  • Jessica C.
    THE MOST POPULAR TOY we have in the toy room, I just bought a second one so that more children will be able to play with it

    Oct 24,2018

  • Sydney
    It seemed to be a really fun little toy, I think this was the most popular toy I gave out for Christmas

    Dec 08,2018

  • Dhazey
    It was a wonderful toy to work together on and we were both delighted with the final result

    Oct 28,2018

  • Tim Broughton
    My grandson is a little young for this toy but it can keep him amused for a long time

    Dec 01,2018

  • Hardready
    I have not seen him this focused and interested this long in a toy in a long time

    Nov 12,2018

  • NworksDev
    Two of our grandchildren are having a fun time using this educational toy

    Nov 20,2018

  • GitRebase
    Really awesome toy my three year old absolutely loves this thing

    Nov 05,2018

  • Linda C.
    Overall I would say this is a fun toy for kids both young and old

    Nov 03,2018